code: def complex(
      real,
      imag,
      *,
      out=None,
  ):
      assert real.dtype == imag.dtype, TypeError(
          "Expected real and imag to have the same dtype, "
          f" but got real.dtype = {real.dtype} and imag.dtype = {imag.dtype}."
      )
  
      complex_dtype = (
          ivy.complex64 if real.dtype != ivy.float64 else ivy.complex128
      )
      complex_array = real + imag * 1j
      return complex_array.astype(complex_dtype, out=out)
  
imports: import ivy
  from ivy.functional.frontends.torch.func_wrapper import to_ivy_arrays_and_back, to_ivy_shape
  from ivy.func_wrapper import with_unsupported_dtypes, with_supported_dtypes
  import ivy.functional.frontends.torch
label_desc: Use image node_id 5 for calling a global function with example usage: complex(real, imag) and returns: complex_array